Push-pull current-starved voltage controlled oscillator
The integration of a push-pull circuit with a current mirror in VCOs addresses the limitations of tunable range and non-linear tuning, enhancing the performance and programmability of VCOs by extending the control voltage range and ensuring linear frequency tuning.
US20260189217A1Pending Publication Date: 2026-07-02QUALCOMM INC
Patent Information
- Authority / Receiving Office
- US · United States
- Patent Type
- Applications(United States)
- Current Assignee / Owner
- QUALCOMM INC
- Filing Date
- 2025-01-02
- Publication Date
- 2026-07-02
Smart Images
Figure US20260189217A1-D00000_ABST
Abstract
A voltage controlled oscillator (VCO) includes a ring oscillator including delay buffers coupled in a loop. The VCO also includes a push-pull circuit having an input and an output, wherein the input of the push-pull circuit is configured to receive a control voltage. The VCO also includes a current mirror having an input terminal and output terminals, wherein the input terminal of the current mirror is coupled to the output of the push-pull circuit and each of the output terminals of the current mirror is coupled to a respective one of the delay buffers. The VCO further includes a current source coupled to the input terminal of the current mirror.
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